STD 11 - 10. Cell cycle and cell division — NEET STD 11 Science — Question

$I.$ Human insulin is made-up of $51$ amino acidsarranged in two polyperptide chains.

$II.$ The two polypeptide chains are interconnected by two disulphide bridges.

$III.$ In mammals including humans, insulin is synthesised as a pro-hormone, which contains an extra stretch called the $C$ -peptide.

$IV.$ $C$ -peptide is not present in the mature insulin

Which of the statements given above are correct?

$I.$ It provides all the optimal conditions for achieving the desired product by providing optimal growth conditions like temperature, $p H$, substrate, salt, vitamin and oxygen

$II.$4 It is suited for large-scale production of microorganisms under aseptic conditions for a number of days

Correct option is

Statement $I$: A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid ( $N$-terminal).

Statement $II$: Adult human haemoglobin, consists of $4$ subunits (two subunits of $\alpha$ type and two subunits of $\beta$ type.)

In the light of the above statements, choose the correct answer from the options given below: